scholarly journals The Potential Of Geomatics In The Realization Of A Map Of Desertification Sensitivity Southern Massif Belezma - Batna - (Algeria)

Author(s):  
H. Benmessaoud ◽  
F. Chergui ◽  
R. Sahnouni ◽  
C. Chafai

Desertification is the gradual and sustained reduction in the quantity and quality of the biological productivity of arid and semi-arid land. <br><br> The study area is located in the North Eastern part of Algeria, it has a rich heritage in its biodiversity, however weather conditions and adverse human reality, induce a degradation of the physical environment in the form of a regression of vegetation cover. To assess desertification in our study area map of desertification sensitivity is a tool for decision support. <br><br> For the realization of this Map we used the ArcGis software applied a methodology which is inspired by the concept MEDALUS (Mediterranean Desertification and Land Use, 1999) by crossing four thematic layers that may have an impact on the process of desertification. <br><br> The results of Cartography and statistical analysis permit the classification of our region in terms of sensitivity to desertification in four very important classes. (Not affected, Insensitive, Sensitive and highly sensitive). <br><br> More than 69.92% of the surface area were classified sensitive to very sensitive, For against 30.07% is classified in unallocated insensitive. <br><br> Planning restoration work and the fight against desertification are expected to limit the risk of desertification in the study area perspectives.

2016 ◽  
pp. 105-126
Author(s):  
Bence Simon

Roman times are known as an epoch when man subdued nature all over the \textit{orbis terrarum}, however all humans were and are still bound by certain environmental conditions, therefore in settling a special dichotomy can be observed. In my present study I am analysing the Roman settlement patterns of the North-Eastern part of Pannonia by evaluating field-walking material and results of excavations. The classification of the sites is mainly based on building material and pottery collected on the field. After examining the structure of settlements with the assistance of GIS technologies, I assess how the least cost paths calculated from the relief of terrain influenced settling.


Biologia ◽  
2019 ◽  
Vol 75 (1) ◽  
pp. 53-70
Author(s):  
Igor Goncharenko ◽  
Mykola Kozyr ◽  
Olexander Senchylo

2015 ◽  
Vol 6 (1) ◽  
pp. 103-106
Author(s):  
SA Mamun ◽  
S Roy ◽  
MS Rahaman ◽  
M Jahan ◽  
MS Islam

The study was conducted to observe the status of fisheries resource of Tanguar haor, one of the large wetland in the north eastern part of Bangladesh. For this purpose the whole study was completed in two parts: interviewing with local people and analyzing the water quality. Indiscriminate harvesting of mother fishes, use of agrochemicals, sedimentation on haor basin and habitat destruction were found as major causes of fisheries resources degradation in the study area. Most of the water quality parameters were found good which were within the standard level set by Government of Bangladesh for fisheries. However, EC and TDS were found higher than the recommended level for fish production.DOI: http://dx.doi.org/10.3329/jesnr.v6i1.22048 J. Environ. Sci. & Natural Resources, 6(1): 103-106 2013


2021 ◽  
pp. 38-40
Author(s):  
Е.А. Шиляева ◽  
А.В. Корнев

В Северо-Восточной части Приволжского федерального округа традиционно выращивают вегетативно размножаемые формы лука. Период активной вегетации растений составляет 106–176 дней, а сумма температур выше 10 °C – 1600–2400, что ограничивает семенное размножение луковых культур. В последнее время растет спрос товаропроизводителей на посадочный материал шалота. Его возделывание по трудоемкости превышает обычный репчатый лук и требует определенных навыков в работе. По своим же пищевым показателям он всегда будет иметь спрос у потребителя. Цель работы – изучить вегетативный и семенной способы размножения лука шалота в условиях Кировской области. В статье обобщены результаты исследований с северной группой шалота за 2001–2020 годы, проведенные лабораторией северного овощеводства ВНИИО – филиала ФГБНУ ФНЦО в Кировской области. Опыты закладывали на дерново-подзолистой, хорошо окультуренной почве, овощного севооборота. Погодные условия были разнообразными: от типичных для зоны – по большинству лет исследований, до аномально теплых, жарких и засушливых (2007, 2010 годы) и холодных, с обилием осадков (2006, 2019 годы). Рассмотрены основные этапы технологии производства лука шалота при вегетативном и семенном способах размножения: выбор оптимального типа почвы, предшественника, подготовка почвы, сроки, схемы, нормы посева и посадки, орошение, защита от вредителей, болезней и сорняков, уборка, хранение, сорта шалота, внесенные Государственный реестр селекционных достижений и рекомендованные для выращивания в северных условиях. На Северо-Востоке Европейской части страны выборок шалота получают в трехлетней культуре по схеме: отбор и охлаждение маточников; весенняя посадка маточников, получение семян; получение севка из семян; получение лука выборка из севка. Для выращивания в Северо-Восточной части Приволжского федерального округа рекомендованы к выращиванию сорта лука шалота Зубаревский и Братский. In the North-Eastern part of the Volga Federal District, vegetatively propagated forms of onions are traditionally grown. The period of active vegetation of plants is 106–176 days, and the sum of temperatures above 10 °C is 1600–2400, which limits the seed propagation of onion crops. Recently, the demand of commodity producers for shallot planting material has been growing. Its cultivation is more labor-intensive than ordinary onions and requires certain skills in the work. According to its own nutritional indicators, it will always have a demand from the consumer. The aim of the work is to study the vegetative and seed methods of propagation of shallots in the conditions of the Kirov region. The article summarizes the results of studies of the Northern group of the shallots over the years 2001–2020 conducted by the laboratory of the Northern ARRIVG – branch of FSBSI FSVC in the Kirov region. The experiments were laid on sod-podzolic, well-cultivated soil, in vegetable crop rotations. Weather conditions were varied: from typical for the zone-according to most years of research, to abnormally warm, hot and dry (2007, 2010) and cold, with an abundance of precipitation (2006, 2019). The main stages of shallot production technology for vegetative and seed propagation methods are considered: selection of the optimal soil type, precursor, soil preparation, timing, schemes, sowing and planting rates, irrigation, protection from pests, diseases and weeds, harvesting, storage, shallot varieties included in the State Register of Breeding Achievements and recommended for cultivation in northern conditions. In the North-East of the European part of the country, shallot samples are obtained in a three-year culture according to the scheme: selection and cooling of queen bees; spring planting of queen bees, obtaining seeds; getting a seed crop; Getting an onion sample from the seed crop. For cultivation in the North-Eastern part of the Volga Federal District, the varieties of shallots Zubarevsky and Bratsky are recommended for cultivation.


Author(s):  
Md. Ashraf Hussain ◽  
Md. Lutful Kabir ◽  
Md. Abu Sayeed ◽  
A.T.M. Mahbub-E-Elahi ◽  
Md. Sultan Ahmed ◽  
...  

The present study was carried out at the north-eastern part of Bangladesh to investigate organochlorine pesticide (OCP) residues and microbiological quality of dried barb (Puntius sophore). Samples were collected from both producers and retailers from December 2016 to April 2017. A control sample was also prepared with the same raw fish used by the producers in the laboratory to compare the result. Gas Chromatography with Electron Capture Detector (GC-ECD) was used to detect and quantify OCP residues. Around 22 % (6) samples out of 27 were found contaminated with OCP residues. Among these six adulterated samples, four were from retailers and two from producers. Only Aldrin was detected in four samples and rest two samples were detected with both Aldrin + Dieldrin and Aldrin + Endrin. Aldrin was found between 0.332 to 0.967 ppm, Dieldrin 0.762 ppm, and Endrin 0.828 ppm. All these values were much higher than the Maximum Residual Limit (MRL) 0.1 ppm. Aerobic Plate Count (APC) of producer samples were ranged between log5.3 &plusmn; 0.02 to log5.4 &plusmn; 0.03, log6.2 &plusmn; 0.02 to log6.4 &plusmn; 0.02 for retailer samples and log5.0 &plusmn; 0.03 to log5.2 &plusmn; 0.04 for control samples. While fungal count was ranged between log3.2 &plusmn; 0.04 to log3.5 &plusmn; 0.04, log3.4 &plusmn; 0.04 to log3.6 &plusmn; 0.03 and log2.2 &plusmn; 0.05 to log2.5 &plusmn; 0.03 for producer, retailer and control samples respectively. All the producer and retailer samples and one-third of the control samples were found contaminated with Escherichia coli. Whereas, Salmonella sp. was detected as 13.3% in producer samples, 20% in retailer samples except for the control. In case of Vibrio sp., maximum count was found for retailer samples (13.3%), whereas, producer and control samples showed no detection. The finding of the present study revealed the presence of pesticides and poor microbiological quality of dried barb are alarming for the consumers of Bangladesh and which may cause chronic disease and potential long-term risk for human health.


Author(s):  
Sergey B. Kuklev ◽  
Vladimir A. Silkin ◽  
Valeriy K. Chasovnikov ◽  
Andrey G. Zatsepin ◽  
Larisa A. Pautova ◽  
...  

On June 7, 2018, a sub-mesoscale anticyclonic eddy induced by the wind (north-east) was registered on the shelf in the area of the city of Gelendzhik. With the help of field multidisciplinary expedition ship surveys, it was shown that this eddy exists in the layer above the seasonal thermocline. At the periphery of the eddy weak variability of hydrochemical parameters and quantitative indicators of phytoplankton were recorded. The result of the formation of such eddy structure was a shift in the structure of phytoplankton – the annual observed coccolithophores bloom was not registered.


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